Add full-node fallback list

[Tzal3x]

We could add load balancing routing on the portal side, i.e. monitor the available full nodes from it and pick the first available one in order of preference.

Suggestion: add the possibility for users to pick their own trusted full node.

Recommended full nodes:

Triton One
DSRV (All that node)
ANKR
Bware
Blockvision

[mario4tier]

Sharing here that I have already develop a sui nodes proxy for network robustness (as part of a Sui foundation grant).

It is running by default for devs using Suibase. Your app just use a local daemon port and it "just work" (there is one port for testnet, another for mainnet etc...).

I understand you might prefer to have your own in-house solution, just a FYI.

What does it do?

• Configurable Full-nodes list (hot-reloaded without traffic disruption).
• Periodic monitoring of configured nodes (e.g. average response time to a health check).
• Real-time "best nodes" subset for load-balancing (see "green" in picture).
• Automatic failover/retry, which is also "sui-aware" to prevent equivocation.
• Open-source (Rust, tokio optimized).

[Tzal3x]

Thank you @mario4tier, we will consider your suggestion! 👍